This section contains three sample European patent applications (description, claims, drawings and abstract), one for each of the following technical fields:

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chemistry

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mechanics

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computers

These examples comply with the provisions governing European patent applications. However, because of the need to include explanatory notes, the margins could not be left blank (see point 71). For the requirements governing disclosure of the invention see points 67 and 68. The content of these examples is not necessarily patentable.